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5252 Aluminum vs. ACI-ASTM CT15C Steel

5252 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CT15C steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 5252 aluminum and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68 to 75
140
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 4.5 to 11
23
Fatigue Strength, MPa 100 to 110
130
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
76
Tensile Strength: Ultimate (UTS), MPa 230 to 290
500
Tensile Strength: Yield (Proof), MPa 170 to 240
190

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 180
1080
Melting Completion (Liquidus), °C 650
1410
Melting Onset (Solidus), °C 610
1360
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 140
12
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
36
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.7
6.1
Embodied Energy, MJ/kg 160
88
Embodied Water, L/kg 1190
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 23
90
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 430
93
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 23 to 30
17
Strength to Weight: Bending, points 31 to 36
17
Thermal Diffusivity, mm2/s 57
3.2
Thermal Shock Resistance, points 10 to 13
12

Alloy Composition

Aluminum (Al), % 96.6 to 97.8
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.1
40.3 to 49.2
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0 to 0.1
0.15 to 1.5
Nickel (Ni), % 0
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.080
0.15 to 1.5
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.1
0